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annotate Lib/IMPL/Web/DOM/FileNode.pm @ 255:827cf96faa1c

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refactoring (incomplete)
author sergey
date Fri, 07 Dec 2012 16:58:19 +0400
parents 4d0e1962161c
children
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1 package IMPL::Web::DOM::FileNode;
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2 use parent qw(IMPL::DOM::Node);
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3
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4 __PACKAGE__->PassThroughArgs;
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5
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6 use IMPL::Class::Property;
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7 use File::Temp qw(tempfile);
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8
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9 BEGIN {
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10 public property parameterName => {
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11 get => sub {
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12 my ($this) = @_;
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13 $this->_parameterName() or
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14 $this->_parameterName(
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15 join '/', ( map {
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16 (defined $_->nodeProperty('instanceId')) ?
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17 $_->nodeName . '['.$_->nodeProperty('instanceId').']':
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18 $_->nodeName
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19 } $this->_selectParents, $this )
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20 );
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21 }
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22 };
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23 private property _parameterName => prop_all;
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24 public property fileName => {
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25 get => sub {
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26 my ($this) = @_;
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27 return $this->document->query->param($this->parameterName);
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28 }
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29 };
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30 public property fileHandle => {
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31 get => sub {
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32 my ($this) = @_;
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33 return $this->document->query->upload($this->parameterName);
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34 }
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35 };
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36 }
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37
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38 sub invokeTempFile {
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39 my ($this,$sub,$target) = @_;
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40
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41 die new IMPL::InvalidArgumentException("A reference to a function should be specified") unless $sub && ref $sub eq 'CODE';
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42
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43 $target ||= $this;
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44
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45 my $query = $this->document->nodeProperty('query') or die new IMPL::InvalidOperationException("Failed to get a CGI query from the document");
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46 my $hFile = $query->upload($this->parameterName) or die new IMPL::IOException("Failed to open the uploaded file",$query->cgi_error,$this->parameterName,$this->nodeProperty('instanceId'));
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47
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48 my ($hTemp,$tempFileName) = tempfile();
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49 binmode($hTemp);
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50
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51 print $hTemp $_ while <$hFile>;
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52
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53 $hTemp->flush();
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54 seek $hTemp, 0,0;
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55 {
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56 local $_ = $tempFileName;
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57 $sub->($this,$tempFileName,$hTemp);
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58 }
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59 }
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60
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61 sub _selectParents {
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62 my ($node) = @_;
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63
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64 my @result;
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65
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66 unshift @result, $node while $node = $node->parentNode;
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67
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68 return @result;
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69 }
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70
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71 1;
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72
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73 __END__
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74
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75 =pod
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76
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77 =head1 NAME
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78
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79 C<IMPL::Web::DOM::FileNode> - узел, использующийся для представления параметра запроса в котором передан файл.
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80
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81 =head1 SINOPSYS
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82
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83 =begin code xml
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84
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85 <!-- input.schema.xml -->
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86 <schema>
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87 <SimpleType type="file" nativeType="IMPL::Web::DOM::FileNode"/>
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88 <ComplexNode name="user">
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89 <Node type="file" name="avatar"/>
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90 </ComplexNode>
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91 </schema>
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92
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93 =end code xml
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94
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95 =begin code
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96
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97 # handle.pl
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98 use IMPL::DOM::Transform::PostToDOM ();
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99 use IMPL::DOM::Schema;
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100 use CGI;
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101 use File::Copy qw(copy);
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102
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103 my $t = new IMPL::DOM::Transform::PostToDOM(
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104 undef,
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105 IMPL::DOM::Schema->LoadSchema('input.schema.xml'),
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106 'user'
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107 );
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108
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109 my $doc = $t->Transform(CGI->new());
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110
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111 if ($t->Errors->Count) {
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112 # handle errors
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113 }
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114
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115 $doc->selectSingleNode('avatar')->invokeTempFile(
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116 sub {
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117 my($node,$fname,$fhandle) = @_;
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118
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119 # do smth with file
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120 copy($_,'avatar.jpg');
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121
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122 # same thing
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123 # copy($fname,'avatar.jpg');
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124 }
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125 );
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126
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127 =end code
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128
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129 =head1 DESCRIPTION
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130
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131 Данный класс используется для представлении параметров C<CGI> запросов при преобзаовании
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132 запроса в ДОМ документ преобразованием C<IMPL::DOM::Transform::PostToDOM>.
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133
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134 Узлы данного типа расширяют стандатрный C<IMPL::DOM::Node> несколькими свойствами и
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135 методами для доступа к файлу, переданному в виде параметра запроса.
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136
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137 =head1 MEMBERS
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138
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139 =head2 PROPERTIES
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140
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141 =over
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142
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143 =item C<[get] parameterName>
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144
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145 Имя параметра C<CGI> запроса соответствующего данному узлу.
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146
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147 =item C<[get] fileName>
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148
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149 Имя файла из параметра запроса
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150
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151 =item C<[get] fileHandle>
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152
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153 Указатель на файл из параметра запроса
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154
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155 =back
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156
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157 =head2 METHODS
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158
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159 =over
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160
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161 =item C<invokeTempFile($callback,$target)>
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162
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163 Сохраняет файл, переданный в запросе во временный, вызывает C<$callback> для обработки временного файла.
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164
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165 =over
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166
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167 =item C<$callback>
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168
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169 Ссылка на функцию которая будет вызвана для обработки временного файла. C<callback($target,$fname,$fhandle)>
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170
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171 =over
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172
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173 =item C<$fname>
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174
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175 Имя временного файла
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176
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177 =item C<$fhandle>
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178
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179 Указатель на временный файл
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180
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181 =back
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182
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183 Также пременная C<$_> содержит имя временного файла.
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184
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185 =item C<$target>
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186
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187 Значение этого параметра будет передано первым параметром функции C<$callback>.
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188
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189 =back
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190
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191 =back
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192
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193 =cut